a body of mass 2 kg is moving in a circular path of radius 2 metre how much is work done on the body and why
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The expression forcentripetal force is:
F = m v^2/r.
F = (2 kg)*(10 m/s)^2 / (0.05 m) = (200/.05) kg m/s^2 = 4000 kg m/s^2 = 4000 N
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